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    BC190405733 Code of Assembly

    Uploaded by

    Gc Basic
    1. The document provides instructions for Assignment #02 in the course Computer Architecture and Assembly Language Programming. It outlines rules for marking, submission format, and deadline. 2. The assignment question asks to write an assembly language program that clears the screen and prints the student's name when the right shift key is pressed, and clears and prints the student's VU ID when the left shift key is pressed using BIOS video services interrupts. 3. Key details of the solution are that it sets up an interrupt service routine to check for right and left shift key presses, calls a cls subroutine to clear the screen, and uses BIOS function 0x13 to print the name or ID strings at location 0xA03

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd

    BC190405733 Code of Assembly

    Uploaded by

    Gc Basic
    22 views4 pages
    1. The document provides instructions for Assignment #02 in the course Computer Architecture and Assembly Language Programming. It outlines rules for marking, submission format, and deadline. 2. The assignment question asks to write an assembly language program that clears the screen and prints the student's name when the right shift key is pressed, and clears and prints the student's VU ID when the left shift key is pressed using BIOS video services interrupts. 3. Key details of the solution are that it sets up an interrupt service routine to check for right and left shift key presses, calls a cls subroutine to clear the screen, and uses BIOS function 0x13 to print the name or ID strings at location 0xA03

    Original Description:

    Assebmly code for Print Name on Screen

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    DOCX, PDF, TXT or read online from Scribd

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    1. The document provides instructions for Assignment #02 in the course Computer Architecture and Assembly Language Programming. It outlines rules for marking, submission format, and deadline. 2. The assignment question asks to write an assembly language program that clears the screen and prints the student's name when the right shift key is pressed, and clears and prints the student's VU ID when the left shift key is pressed using BIOS video services interrupts. 3. Key details of the solution are that it sets up an interrupt service routine to check for right and left shift key presses, calls a cls subroutine to clear the screen, and uses BIOS function 0x13 to print the name or ID strings at location 0xA03

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    22 views4 pages

    BC190405733 Code of Assembly

    Uploaded by

    Gc Basic
    1. The document provides instructions for Assignment #02 in the course Computer Architecture and Assembly Language Programming. It outlines rules for marking, submission format, and deadline. 2. The assignment question asks to write an assembly language program that clears the screen and prints the student's name when the right shift key is pressed, and clears and prints the student's VU ID when the left shift key is pressed using BIOS video services interrupts. 3. Key details of the solution are that it sets up an interrupt service routine to check for right and left shift key presses, calls a cls subroutine to clear the screen, and uses BIOS function 0x13 to print the name or ID strings at location 0xA03

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 4

    Computer Architecture and

    Assembly Language Total marks = 20

    Programming (CS401) Deadline Date

    Fall 2022, Assignment # 02 January 25, 2023


    Student ID: BC190405733

    Please carefully read the following instructions before attempting assignment.

    RULES FOR MARKING


    It should be clear that your assignment would not get any credit if:

     The assignment is submitted after the due date.


     The submitted assignment does not open or file is corrupt.
     Strict action will be taken if submitted solution is copied from any other student or from the
    internet.
    You should concern the recommended books to clarify your concepts as handouts are not sufficient.

    You are supposed to submit your assignment in .doc or docx format.

    Any other formats like scan images, PDF, zip, rar, ppt and bmp etc. will not be accepted.

    Topic Covered:

     Clearing the Screen and String Printing, keyboard interrupt service routine.
     Interrupts Handling, Dos Interrupt, BIOS Video Services.

    NOTE

    No assignment will be accepted after the due date via email in any case (whether it is the case of load
    shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of
    deadline. It is recommended to upload solution file at least two days before its closing date.

    If you people find any mistake or confusion in assignment (Question statement), please consult with
    your instructor before the deadline. After the deadline no queries will be entertained in this regard.

    Syllabus:-

    Lectures # 01 - 33.

    For any query, feel free to email at:

    cs401@vu.edu.pk

    Q- Write an assembly language program that performs the following


    operations :
    1- While pressing the right shift button clear the screen and print
    your name on the console screen using BIOS Video Services.

    2- While pressing the left shift button clear the screen and
    Prints your VU ID on the console screen using BIOS Video Services.

    Solution:

    [org 0x0100]
    jmp start
    vuname db' Hafiz Ahmad Bin Umer','$'
    vuid db'bc190405733','$'
    kbisr: push ax
    push es
    mov ax, 0xb800
    mov es, ax
    in al, 0x60
    cmp al, 0x2a
    jne nextcmp
    call cls

    mov ah, 0x13


    mov al, 1
    mov bh, 0
    mov bl, 7
    mov dx,0x0A03
    mov cx, 11
    push cs
    pop es
    mov bp, vuid
    int 0x10

    jmp nomatch
    nextcmp: cmp al, 0x36

    jne nomatch
    call cls

    mov ah, 0x13


    mov al, 1
    mov bh, 0
    mov bl, 7
    mov dx, 0x0A03
    mov cx, 20
    push cs
    pop es
    mov bp, vuname
    int 0x10

    nomatch: mov al, 0x20


    out 0x20, al
    pop es
    pop ax
    iret
    start: xor ax, ax
    mov es, ax
    cli
    mov word [es:9*4],kbisr
    mov [es:9*4+2], cs
    sti
    ll: jmp 11

    cls:
    pusha
    mov ah, 0x00
    mov al, 0x03
    int 0x10
    popa
    ret

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